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In the secure operation of modern power grids, transformers are indispensable electrical equipment, and their stable operation is crucial for ensuring the reliability and stability of power systems. Compared to traditional power transformers, those utilizing amorphous alloy cores exhibit significant advantages. Conducting simulation modeling of amorphous alloy transformers and investigating the distribution patterns of short-circuit electromagnetic forces are of great significance for enhancing their short-circuit withstand capability. This research initially establishes a three-dimensional model of a wound-core transformer and conducts electromagnetic field simulations using finite element analysis, systematically investigating the short-circuit characteristics of amorphous alloy three-dimensional wound-core transformers. Subsequently, based on the magnetic-circuit coupling method, the short-circuit current, leakage magnetic field distribution, and axial/radial electromagnetic forces on the windings under short-circuit conditions are obtained. Finally, the distribution patterns of leakage flux and electromagnetic forces in the high- and low-voltage windings are summarized, laying a solid foundation for further research on the short-circuit characteristics of amorphous alloy wound-core transformers.

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Research on Short-Circuit Electrodynamic Forces in Amorphous 3D Wound-Core Transformer Windings

  • 会议论文

  • 发表日期：

    2026年

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  • Pan Yao,
  • Qingxiang Gan,
  • Zixin Li,
  • Siying Yang,
  • Jiming Li,
  • Shuhong Wang,
  • Naming Zhang

摘要

In the secure operation of modern power grids, transformers are indispensable electrical equipment, and their stable operation is crucial for ensuring the reliability and stability of power systems. Compared to traditional power transformers, those utilizing amorphous alloy cores exhibit significant advantages. Conducting simulation modeling of amorphous alloy transformers and investigating the distribution patterns of short-circuit electromagnetic forces are of great significance for enhancing their short-circuit withstand capability. This research initially establishes a three-dimensional model of a wound-core transformer and conducts electromagnetic field simulations using finite element analysis, systematically investigating the short-circuit characteristics of amorphous alloy three-dimensional wound-core transformers. Subsequently, based on the magnetic-circuit coupling method, the short-circuit current, leakage magnetic field distribution, and axial/radial electromagnetic forces on the windings under short-circuit conditions are obtained. Finally, the distribution patterns of leakage flux and electromagnetic forces in the high- and low-voltage windings are summarized, laying a solid foundation for further research on the short-circuit characteristics of amorphous alloy wound-core transformers.